Mining-machine.



C. E. DAVIS.

EfllNlNG MACHINE.

APPUCATION mm mAvu, 1915.

Patentw Feb.19,1918.

3 SHEETS-SHEET l- C. E. DAVIS. MINING MACHINE. APPLICATION FILED MAY II. I915.

Patented Feb.19,1918.

1925695g%' a SHEETS-SHEEI'Z C. E. DAVIS. MINING MACHINE. APPLICATION FILED MAY 11. 1915.

Patented Feb.19,191&

3 SHEETS-SHEET 3.

ED ST CHARLES E. DAVIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOODMAN MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MIN IN G-MACHINE.

Specification of Letters Patent.

Patented Feb. 19, 1918.

To all whom it may concern:

Be it known that I, CHARLES E. DAVIS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois have invented a certain new and useful Improvement in Mining-Machines, of which the following is a specification.

This invention relates to mining machines and has for its object to provide a new and improved device of this 'description.

The invention is illustrated in the accompanying drawings, wherein-- Figure 1 is a vertical sectional view through a machine embodying the invention;

Fig. 2 is adiagrammatic view machine in operation;

Fig. 3 is a plan view with parts broken away;

Fig. 4 is a section below the supporting frame, showing parts broken away.

Like numerals refer to like parts throughout the several figures.

In this construction I provide a main frame 1, referably mounted upon wheels 2, the wheels adapted to run upon the usual rails. Mounted upon the main frame is an intermediate frame 3, said intermediate frame being pivoted to the main frame by showing the means of the pivot or short shaft 4 (see Fig.

1). The intermediate frame 3 carries a motor 4, which by means of gears 5 and 6 drives a shaft 7 mounted upon said intermediate frame. This shaft is provided with a worm 8, which engages a worm wheel 9.

(see Fig. 4). This worm wheel has its hub mounted in supports 10 and there are two shafts 11 and 12 journaled in this hub, the shafts being separate from each other. The shaft 11 is connected with the worm wheel 9 by means of the clutch member 13 controlledby the handle 14, said clutch member engaging with a clutch member on the hub of the worm wheel 9. This shaft 11 is provided with a worm 15, which engages a worm gear 16 connected with a drum 17, about which is Wound a flexible cablle1 18, said fltfizible cable en a in direction c an 'n u eys 19 on the i nte rmediate frame. 'l h shaft 12 is connected with the worm wheel 9 by the clutch member 20 which engages a clutch member on the hub of the worm wheel 9, said clutch member 'being controlled by the handle 21. The shaft 12 is provided with a worm 22, which engages a worm wheel 23 on the shaft 24 mounted in the intermediate frame. The shaft 24 is provided with a pinion 25, which .engages a curved rack formed by teeth 26 on the main frame 1.

It will be noted that the main frame is circular and that the main frame and the intermediate frame have coiiperating guides 27 and 28, so that the intermediate frame is guided in its movement by the main frame. The shaft 24 is provided with another gear 29, which meshes with a gear 30 mounted upon the movable frame 3, said gear 30 engaging a curved rack formed by teeth 31 on the intermediate driving part 32, said driving part being rotatably mounted upon the pivot or short shaft 4. A connecting piece 33 is connected to the driving part 32 by the pin 34, and with the moving frame 35 by means of the pin or pivot 36. Connected with the moving frame 35 are the guiding parts- 37 forming the guideway 38. The guiding art 39 on the intermediate frame projects mto this guideway. The moving frame 35 is pivoted about the shaft 24. This result is secured by providing the shaft 24 With a sleeve 40 having a supporting projection 41 on which the moving frame rests, said frame being held against removal by the part 42. This sleeve 40 acts as a pivot and works in a guideway 43 on the moving frame. The frame 35 is provided with supporting pieces 44 having attached thereto racks 45. A cutting element 46 is provided along its sides with the shafts 47 (see Fig. 3) having pinions 48, which engage said racks. These inions are operated by the motor 49 throug the bevel gears 50 and 51, the shaft 52, the worm 53, the worm wheel 54, the shaft 55, the Worms 56 and the worm wheels 57, said latter worm wheels being on-the clutch member 58 by means of the handle 59. Mounted upon the cutting element is a cutterarm 46, about which the cutter chain (not shown) passes. There is also a sprocket Wheel 46*, which drives this cutter chain. In the operation of the device the flexible cable 18 is fastened to a fixed part as shown in Fig. 4, and the clutch 13 moved to connect the drum 17 with the motor, whereupon the machine is moved forward so as to makethe initial cut in the coal. The drum 17 is then disconnected from the motor by the clutch 13 and the shaft 12 connected with the motor by the clutch 20. This movesthe device reaches the end of its out the flexiframe and the moving ble cable 18 is connected to a fixed part back of the machine and the motor disconnected from the shaft 21 and connected with the drum 17, thereby making the withdrawing cut of the machine.

It will be noted that in this construction there are three connections between the intermediate frame 3 and the moving frame 35, and that all three of these connections are driving connections and act to move the moving frame. One of these connections is the shaft 24. Another of these connections is the part 39, and the other connection is made through the parts 36, 33, 3f, 32 and 30. These three connections give the moving frame and cutting element the desired motion to cause the end of the cutter. arm to move substantially in a straight line.

I claim:

1. A mining machine comprising a substantially horizontal main frame, a moving frame, a substantially horizontal intermedlate frame upon which the moving frame is carried, a cutting device on said moving frame, a cutter arm projecting from said cutting device adapted to cut the material by sidewise movement, said intermediate frame movably connected with the main frame, two separated connections connecting the intermediate frame with the moving frame, means for moving the intermediate frame with relation to each other and with relation to the main frame in substantially horizontal planes, a fixed shaft about which the intermediate frame rotates during its movement, the moving frame moving bodily with relation to said fixed shaft whereby the end of said' cutter arm moves in a substantially straight line during its cutting movement.

2. A mining machine comprising a main frame, an intermediate frame, a substantially vertical pivoting device connecting the intermediate frame with the main frame, a moving frame, a sliding connection between the moving frame and the intermediate frame, means for rotating the intermediate frame about its pivotal connection with the main frame, means for simul-.

taneously sliding the moving frame with :relation to said intermediate frame, and a cutting element mounted on said moving frame.

3. A mining machine comprising a main frame, an intermediate frame pivotally connected with the main frame, a moving frame slidably connected with the intermediate frame, a toothed part pivotally mounted between the Intermediate frame and the moving frame, a connection between said toothed part and the moving frame, means for rotating the intermediate frame and toothed part at difierent speeds, and a cutting element mounted on the moving frame.

4. A mining machine comprising a main frame, an intermediate frame pivotally connected with the main frame, a moving frame slidably connected with the intermediate frame, a shaft mounted on the intermediate frame, a pinion thereon, teeth on the main frame, with which said pinion engages so that when the pinion is rotated the intermediate frame is moved about its pivotal point, a pivotally mounted toothed part between the intermediate frame and the moving frame, a gear connection between said shaft and said toothed part, arranged to move said toothed part about its pivotal point at a different speed than the intermediate frame, a connecting piece pivotally connected with the toothed part and the moving frame, and a cutting element mounted on the moving frame.

5. A mining machine comprising a main frame, an intermediate frame rotatably mounted on the main frame, a shaft carried by said intermediate frame, a pinion thereon, teeth on the main frame, with which said pinion engages, so that when the shaft is rotated the intermediate frame is rotated, a pivotally mounted toothed part, a second pinion on said shaft operatively connected with the teeth thereof and arranged so that when the shaft is rotated the toothed part is rotated-at a speed higher than that of the intermediate frame, a connecting piece connecting the toothed part and the moving frame, guiding parts on the intermediate frame and the moving frame, which permit the two frames to slide with relation to each other as the intermediate frame and the toothed part are rotated, and a cuttingelement on said moving frame.

6. A mining machine comprising a main frame, an intermedlate frame rotatably mounted on the main frame, a moving frame mounted on the intermedlate frame, said f I moving frame having guideways at the.

front and the rear thereof, said guidewa s bem substantially parallel, substantiali verticzil guiding parts on the intermediate frame, adapted to engage said guideways,

means for simultaneously rotating the intermediate frame and sliding the moving frame along said guiding parts,'and a cutting element mounted on said moving frame.

7. A mining machine comprising a substantially horizontal main frame, a moving frame, a substantially horizontal intermediate frame upon which the moving frame is carried, said intermediate frame movably connected with the main frame, a, driving part rotatably mounted on the intermediate emme frame, means for firiving saifi driving part,

a pin connected with said oiriving pert a, connecting piece movably connected Wlth said pin, and a pin connecting said connecting piece with, the moving frame, and a cutting element mounted upon the moving frame. 

